Public transit vehicles may be the key to China's success in the U.S. auto market. Chinese company BYD, based in Shenzhen, is manufacturing electric buses. It's an appealing option for a place like California, where emission standards are strict.

At BYD's North American headquarters in Los Angeles, one of the 40-foot electric K9 buses sits on display. BYD Fleet Sales Manager James Holtz sits in the driver's seat and pushes the power button on the dashboard.

Unlike a grumbling diesel engine, this electric bus is quiet. Holtz walks out to the rear of the vehicle and opens the back hatch to reveal its electric components.

"Because it's non-internal combustion, you don't have the moving parts," says Holtz. "You don't have the belts, you don't have the soot, you don't have all the oil. It's a lot cleaner."

This bus can run up to 155 miles on a single charge. It's equipped with huge battery packs located inside the bus columns, behind the rear wheels and mounted on top of the bus.

"It takes about five hours to fully charge our bus from zero state of charge to 100 percent," says Holtz.

BYD already has buses running at Denver International Airport and Disneyworld in Orlando. Fla. Just last month, Los Angeles Metro purchased five buses and nearby Long Beach Transit bought 10.

"It offers opportunities to implement and evaluate a new technology," says Richard Hunt, general manager of Metro's Transit Capital Programs. "They call this the cutting edge or the bleeding edge and we want to be cutting, we don't want to be bleeding. So we're going to evaluate these vehicles very carefully."

Those buses LA bought will be manufactured up the road in Lancaster, Calif., next year. Micheal Austin, vice president of BYD America, says it's a huge step for China's auto industry.

"We are the first Chinese vehicle company to come to the U.S. and build a manufacturing plant," says Austin.

The company received $2 million in tax subsidies to build its North American headquarters in LA. But the California Labor Commissioner's office has now hit BYD with a $99,000 fine. The plant in Lancaster, which has yet to open, is under investigation for paying workers below minimum wage. However, Austin argues BYD has always complied with California labor laws.

"As the Chinese say, the tall trees get the most wind," he says. "Whether it's naysayers that say the technology is not mature or the battery technology is not ready, there is nothing that we can't overcome."

BYD, which stands for Build Your Dreams, started as a battery manufacturer for cellphones, then branched out to solar panels, LED lights and electric cars.

"This is a new, emerging segment and they want to own it," says Ohnsman.

BYD is already considered the world's largest manufacturer of electric buses, which go for about $800,000. That's over double the cost of a traditional diesel bus. However, long-term savings on fuel and maintenance could go a long way. That's what BYD is hoping to prove in the coming months with trial runs across the U.S.